Synthesis, Structures, and Heterogeneous Catalytic Applications of {Co
<sup>3+</sup>
–Eu
<sup>3+</sup>
} and {Co
<sup>3+</sup>
–Tb
<sup>3+</sup>
} Heterodimetallic Coordination Polymers
作者:Girijesh Kumar、Amit Pratap Singh、Rajeev Gupta
DOI:10.1002/ejic.201000651
日期:2010.11
Two Co3+ ―Eu 3+ } and Co3+ -Tb3+ } heterodimetalliccoordinationpolymers have been synthesized by using a Co3+ -based coordination complex as the building block. Structural studies show that the lanthanide atoms are coordinated to the cobalt complex through O amide groups. This results in the generation of a one-dimensional zigzag coordinationpolymer. These coordinationpolymers have been shown
Cobalt Complex as Building Blocks: Synthesis, Characterization, and Catalytic Applications of {Cd<sup>2+</sup>−Co<sup>3+</sup>−Cd<sup>2+</sup>} and {Hg<sup>2+</sup>−Co<sup>3+</sup>−Hg<sup>2+</sup>} Heterobimetallic Complexes
作者:Anurag Mishra、Afsar Ali、Shailesh Upreti、M. Stanley Whittingham、Rajeev Gupta
DOI:10.1021/ic900223f
日期:2009.6.15
The present work demonstrates the utilization of the Co3+ complex of pyridine-amide ligand as building blocks for the assembly of heterobimetallic complexes. These Co3+-centered building blocks orient the tethered pyridine groups to a preorganized cleft that successively coordinates to the Cd2+ and Hg2+ ions in the periphery. Both Cd2+-Co3+-Cd2+} and Hg2+-Co3+-Hg2+} heterobimetallic complexes have been thoroughly characterized, including crystal structures depicting interesting weak interactions in the solid state. The Cd2+-Co3+-Cd2+} and Hg2+-Co3+-Hg2+} heterobimetallic complexes have been further used for the catalytic cyanosilylation of imines and ring-opening reactions of oxiranes and thiiranes. The results suggest peripheral metal-selective catalytic reactions.